This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Geography > Air > Class 7 Geography Chapter 4 Air – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 12 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which range indicates a base/alkaline? A) 1-6. B) 8-14. C) All the above. D) None of the above. Show Answer Correct Answer: B) 8-14. 2. 78% of the gas that makes up the atmosphere is ..... ? A) Ozone. B) Oxygen. C) Nitrogen. D) Carbon Dioxide. Show Answer Correct Answer: C) Nitrogen. 3. The lower the pressure, the ..... A) Better the weather. B) Worse the weather. C) All the above. D) None of the above. Show Answer Correct Answer: B) Worse the weather. 4. The person who looks after you during a flight is the ..... A) Flight helper. B) Pilot. C) Flight attendant. D) Flight band. Show Answer Correct Answer: C) Flight attendant. 5. Oxygen is not used for respiration. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 6. What causes the seasons to change? (hint:Use the model you selected on the previous question to help you) A) The distance between the Earth and the sun. B) The distance from the equator. C) The Earth's tilt in relation to the sun. D) Earth's rotation and revolution. Show Answer Correct Answer: C) The Earth's tilt in relation to the sun. 7. When we switch on a fan, we feel ..... A) Fresh. B) Cool. C) Hot. D) None of the above. Show Answer Correct Answer: B) Cool. 8. The composition of air consists of ..... key components. A) Seven. B) Three. C) Ten. D) None of the above. Show Answer Correct Answer: B) Three. 9. The major horizontal surface on an airplane that provides lift. A) Aileron. B) Rudder. C) Wing. D) Flaps. Show Answer Correct Answer: C) Wing. 10. Pumping up a tire A) More pressure going inside tire. B) More pressure going out of the tire. C) Equal pressure. D) None of the above. Show Answer Correct Answer: A) More pressure going inside tire. 11. The air ..... a wing tends to move faster than the air below it. A) Above. B) Below. C) Beside. D) Inside. Show Answer Correct Answer: A) Above. 12. It is the condition of the atmosphere over a certain period of time. A) Evaporation. B) Precipitation. C) Climate. D) Weather. Show Answer Correct Answer: D) Weather. 13. What are some of the effects of air pollution on humans? A) Heart disease. B) Global warming. C) Ozone depletion. D) All of the above. Show Answer Correct Answer: D) All of the above. 14. How much oxygen is in the air? (%) A) 50%. B) 68%. C) 21%. D) 25%. Show Answer Correct Answer: C) 21%. 15. Hurricanes and tornadoes are products of which pressure system? A) High pressure. B) Low pressure. C) Peer pressure. D) Medium pressure. Show Answer Correct Answer: B) Low pressure. 16. The place where two air masses meet. A) Water cycle. B) Front. C) Air mass. D) Air pressure. Show Answer Correct Answer: B) Front. 17. Another term for burning is A) Combustion. B) Bustion. C) Magnesium oxide. D) Fire triangle. Show Answer Correct Answer: A) Combustion. 18. Combustion requires two components: A) Fuel and oxygen. B) Fuel only. C) Carbon dioxide. D) All of the above. Show Answer Correct Answer: A) Fuel and oxygen. 19. If you have something to declare, you will get to the ..... Channel. A) YELLOW. B) BLACK. C) GREEN. D) RED. Show Answer Correct Answer: D) RED. 20. What kind of air should we breath? A) Clean. B) Dusty. C) Dirty. D) None of the above. Show Answer Correct Answer: A) Clean. 21. What information can be found in the section titled "What Happened" ? A) Why air is important. B) The purpose of air. C) What happens when air is added to a balloon. D) The purpose of wind. Show Answer Correct Answer: C) What happens when air is added to a balloon. 22. Weather is caused due to ..... A) Sun. B) Wind. C) Both. D) None of the above. Show Answer Correct Answer: C) Both. 23. Air is all around us. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. The ..... present in soil help to convert the atmospheric nitrogen into nitrateand ammonium salts. A) Bacteria. B) Virus. C) Fungus. D) None of these. Show Answer Correct Answer: A) Bacteria. 25. Phosphorus Pentoxide Gas combine with water to form A) Phosphorus. B) Phosphoric acid. C) None. D) None of the above. Show Answer Correct Answer: B) Phosphoric acid. 26. What is one way to reduce the amount of energy you use at home? A) Use the air conditioner more often. B) Put your food in the freezer instead of the refrigerator. C) Turn off the TV when not watching. D) Buy more clothes instead of washing dirty ones. Show Answer Correct Answer: C) Turn off the TV when not watching. 27. The increase in air pollution has led to the Taj Mahal becoming more beautiful. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 28. The wind blowing from the west is known as A) Easterly. B) Monsoon. C) Westerly. D) None of these. Show Answer Correct Answer: C) Westerly. 29. Plants do not give out water vapour. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 30. Which gas is used in controlling fires? A) Oxygen. B) Nitrogen. C) Hydrogen. D) Carbon dioxide. Show Answer Correct Answer: D) Carbon dioxide. 31. Explain the role of air pressure in the formation of fronts. A) Fronts are formed due to the rotation of the Earth. B) Air pressure differences create movement of air masses, leading to the formation of warm and cold fronts. C) Fronts are formed by the interaction of different ocean currents. D) Air pressure has no role in the formation of fronts. Show Answer Correct Answer: B) Air pressure differences create movement of air masses, leading to the formation of warm and cold fronts. 32. How much nitrogen is in the air? (%) A) 60%. B) 75%. C) 68%. D) 71%. Show Answer Correct Answer: C) 68%. 33. How do we characterize an air mass that forms over near the equator? A) Warm. B) Cold. C) Dry. D) Wet. Show Answer Correct Answer: A) Warm. 34. Why does cold air sink? A) It is less dense. B) It just does. C) It is sad. D) It is more dense. Show Answer Correct Answer: D) It is more dense. 35. Paragraph 7 focuses primarily on- A) The presidential advisers who have traveled on Air Force One. B) The general atmosphere aboard Air Force One. C) The kinds of meetings held aboard Air Force One. D) The staff members who accompany the president on Air Force One. Show Answer Correct Answer: B) The general atmosphere aboard Air Force One. 36. CFC's cause harm to our A) Inversion Layer. B) Ozone Layer. C) Troposphere. D) Carbon Dioxide. Show Answer Correct Answer: B) Ozone Layer. 37. Which of the following is not a natural contaminant of air? A) Pollen grain. B) Water Vapour. C) Salt particles. D) Sulphuric Acid. Show Answer Correct Answer: D) Sulphuric Acid. 38. Air is present in places that appear to be empty. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 39. When the Ozone Layer loses Ozone what happens to organisms on the earth's surface? A) Nothing happens. B) They are exposed to Acid Rain. C) They are exposed to Ultraviolet B Radiation. D) They are exposed to Smog. Show Answer Correct Answer: C) They are exposed to Ultraviolet B Radiation. 40. Air contains water in the form of ..... A) Ice. B) Dust. C) Water vapour. D) None of the above. Show Answer Correct Answer: C) Water vapour. 41. The covering of air around the earth is called ..... A) Blanket. B) Water vapour. C) Atmosphere. D) Hemisphere. Show Answer Correct Answer: C) Atmosphere. 42. Nodules of leguminous plants contains- A) Symbiotic bacteria. B) Plant proteins. C) All the above. D) None of the above. Show Answer Correct Answer: A) Symbiotic bacteria. 43. What are the important objects for survival of plants and animals? A) Rainfall. B) Sunlight. C) Oxygen. D) All of these. Show Answer Correct Answer: D) All of these. 44. We can Breathe in stratosphere without oxygen cylinder A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 45. We need the air for ..... A) Cook. B) Play. C) Live. D) Nadar. Show Answer Correct Answer: C) Live. 46. Air takes up ..... in any container that it is in. A) Pumps. B) Space. C) Squeezed. D) Pressure. Show Answer Correct Answer: B) Space. 47. True or False Are all spellings for /air/ sound A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 48. What is the best fabric to wear on a rainy day? A) Wool. B) Cotton. C) Nylon. D) None of the above. Show Answer Correct Answer: C) Nylon. 49. Chemical reactions involving sunlight, air, car exhaust, and ozone cause which of the following to form? A) Sick-building syndrome. B) Primary pollutants. C) Smog. D) Acid rain. Show Answer Correct Answer: C) Smog. 50. How much km does stratosphere extend for? A) 30. B) 25. C) 20. D) 85. Show Answer Correct Answer: A) 30. 51. The ozone layer protects us from (a) A) Increased atmospheric heat. B) Decreased atmospheric heat. C) CFCs. D) A. UV rays. Show Answer Correct Answer: D) A. UV rays. 52. What is the value of the optimum effective temperature in summer? A) 24. B) 23. C) 22. D) 21. Show Answer Correct Answer: C) 22. 53. Air is mixture of many ..... A) Land. B) Water. C) Gases. D) None of the above. Show Answer Correct Answer: C) Gases. 54. Which type of air mass bring COLD and WET weather? A) Continental Polar (cP). B) Continental Tropical (cT). C) Maritime Tropical (mT). D) Maritime Polar (mP). Show Answer Correct Answer: D) Maritime Polar (mP). 55. How much % oxygen are their in earth A) (78%). B) (0.04). C) (0.03%). D) (0.93%). E) (21%). Show Answer Correct Answer: E) (21%). 56. Which sentence supports the idea that presidents feel comfortable aboard Air Force One? A) Air Force One has the ability to refuel in flight, so it can fly as long as it needs to. B) His view is that presidents seem more relaxed and act less formal aboard Air Force One than in the Oval Office. C) This was perhaps the most famous version of Air Force One, and it carried eight presidents over the years. D) Presidents have always had to travel, of course. Show Answer Correct Answer: B) His view is that presidents seem more relaxed and act less formal aboard Air Force One than in the Oval Office. 57. Clouds are formed from A) Air. B) Candy. C) Tiny droplets of water. D) None of the above. Show Answer Correct Answer: C) Tiny droplets of water. 58. Which of the following describes a potential human health effect most likely to be associated with a thermal inversion? A) Increase in heart attacks due to increased barometric pressure. B) Increase in respiratory irritation due to increased levels of fine airborne particulates. C) Increase in skin cancer due to increased ozone levels. D) Increase in allergies due to increased household mold. Show Answer Correct Answer: B) Increase in respiratory irritation due to increased levels of fine airborne particulates. 59. -photosynthesis-production of carbonated drinks-Fire extinguisher-carbon cycle are examples of importance of ..... A) Oxygen. B) Carbon dioxide. C) Inert gas. D) Nitrogen. Show Answer Correct Answer: B) Carbon dioxide. 60. Phosphorus combines with oxygen to form A) Phosphoric Acid. B) Phosphorus Pentoxide Gas. C) None of these. D) None of the above. Show Answer Correct Answer: B) Phosphorus Pentoxide Gas. ← PreviousNext →Related QuizzesGeography QuizzesClass 7 QuizzesClass 7 Geography Chapter 4 Air Quiz 1Class 7 Geography Chapter 4 Air Quiz 2Class 7 Geography Chapter 4 Air Quiz 3Class 7 Geography Chapter 4 Air Quiz 4Class 7 Geography Chapter 4 Air Quiz 5Class 7 Geography Chapter 4 Air Quiz 6Class 7 Geography Chapter 4 Air Quiz 7Class 7 Geography Chapter 4 Air Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books